Friday, August 29, 2008
Super Hi-Vision
NHK of Japan started development of Super Hi-Vision technology and showed prototype in 2002. Its video resolution is far better than HDTV at 7680 x 4320 or around 16x greater. Audio portion is 22.2 as compared to only 5.1 of HDTV (typical). Because of the huge amount of data involved in this format, along came the requirement for cameras, transmission technology and display media that can handle such content. Present compression technology can reduce data stream down to 180Mbps only and there is no transmission medium yet that can accommodate such bandwidth. It will take some time before commercial deployment of this format can be implemented.
Tuesday, August 26, 2008
Why does the HVX200 capture 1280x1080 rather than 1920x1080?
Probably because Panasonic couldn’t source imaging chips that would capture the native image, pixel for pixel, at the necessary price or size.
Want proof? Figure 1 shows a video frame exported from Premiere Pro at its native resolution of 1280x1080. As you can see, the wheel is oval. These are the pixels actually captured by the Panasonic.
In Figure 2, the frame was expanded by 150 percent to its intended display resolution of 1920x1080, and the wheel is round. This is the image you would see in your video editor or on your HDTV, which both know to expand DVCPRO HD video out to 150 percent of horizontal resolution.
For details:
http://digitalcontentproducer.com/hdhdv/depth/know_your_formats_0414/index.html
Want proof? Figure 1 shows a video frame exported from Premiere Pro at its native resolution of 1280x1080. As you can see, the wheel is oval. These are the pixels actually captured by the Panasonic.
In Figure 2, the frame was expanded by 150 percent to its intended display resolution of 1920x1080, and the wheel is round. This is the image you would see in your video editor or on your HDTV, which both know to expand DVCPRO HD video out to 150 percent of horizontal resolution.
For details:
http://digitalcontentproducer.com/hdhdv/depth/know_your_formats_0414/index.html
Monday, August 25, 2008
Digital TV Formats
High-Definition Television (HDTV) is a digital television system with greater resolution than analog television systems (NTSC, PAL-SECAM) and standard-definition television (SDTV). Popular HDTV and SDTV formats are the following:
The above three formats are also available in different frame rates as follows - 24fps, 25fps, 50fps and 60fps.
The above three formats are also available in different frame rates as follows - 24fps, 25fps, 50fps and 60fps.
Welcome note from Brewer Diego
Welcome, coffee lovers who also have a passion for new tech ideas! This blog was created to serve as a brewing point for new as well as old tech ideas. Share, learn...but don't forget to drink that cup of coffee!
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